Highly Efficient Graphene-Based Optical Modulator With Edge Plasmonic Effect

Hao, Ran; Ye, Ziwei; Peng, Xiliang; Gu, Yi-Jie; Jiao, Jianyao; Zhu, Haixia; Sha, Wei E. I.; Li, Er‐Ping

doi:10.1109/jphot.2018.2841657

Cited by 12 publications

(6 citation statements)

References 25 publications

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“…The PlasMOStor-based signal modulation is made by exploiting the fast modulation of accumulation conditions in the MOS capacitor, reaching modulation ratios around 10 dB. More recently, the unique optical properties of graphene [138][139][140] are also calling research attention to boost modulation performance, speeds, and optical bandwidths [141,142]. An approach for these graphene-based plasmonic modulators considers a capacitive graphene-insulator-graphene double layer in between two insulator-metal-insulator (IMI) platform [141], as depicted in Figure 3c.…”

Section: Plasmonic Modulatorsmentioning

confidence: 99%

Plasmonics for Telecommunications Applications

Carvalho

Mejía‐Salazar

2020

Sensors

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Plasmonic materials, when properly illuminated with visible or near-infrared wavelengths, exhibit unique and interesting features that can be exploited for tailoring and tuning the light radiation and propagation properties at nanoscale dimensions. A variety of plasmonic heterostructures have been demonstrated for optical-signal filtering, transmission, detection, transportation, and modulation. In this review, state-of-the-art plasmonic structures used for telecommunications applications are summarized. In doing so, we discuss their distinctive roles on multiple approaches including beam steering, guiding, filtering, modulation, switching, and detection, which are all of prime importance for the development of the sixth generation (6G) cellular networks.

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Section: Plasmonic Modulatorsmentioning

confidence: 99%

Plasmonics for Telecommunications Applications

Carvalho

Mejía‐Salazar

2020

Sensors

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“…In this study, we use the commercial software Lumerical FDTD Solutions to numerically calculate and analyze the properties of the proposed GHPW. The 2D surface model is employed to describe the monolayer graphene [28,29]. The graphene's electromagnetic properties are characterized by a surface conductivity σ g , which can be calculated by the Kubo formula under the local random phase approximation (RPA) [30]:…”

Section: Theoretical Modelmentioning

confidence: 99%

Active Manipulation of the Spin and Orbital Angular Momentums in a Terahertz Graphene-Based Hybrid Plasmonic Waveguide

et al. 2020

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Angular momentums (AMs) of photons are crucial physical properties exploited in many fields such as optical communication, optical imaging, and quantum information processing. However, the active manipulation (generation, switching, and conversion) of AMs of light on a photonic chip remains a challenge. Here, we propose and numerically demonstrate a reconfigurable graphene-based hybrid plasmonic waveguide (GHPW) with multiple functions for on-chip AMs manipulation. Its physical mechanism lies in creating a switchable phase delay of ±π/2 between the two orthogonal and decomposed linear-polarized waveguide modes and the spin-orbit coupling in the GHPW. For the linear-polarized input light with a fixed polarization angle of 45°, we can simultaneously switch the chirality (with −ħ/+ħ) of the transverse component and the spirality (topological charge ℓ = −1/+1) of the longitudinal component of the output terahertz (THz) light. With a switchable phase delay of ±π in the GHPW, we also developed the function of simultaneous conversion of the charity and spirality for the circular-polarized input light. In addition, a selective linear polarization filtering with a high extinction ratio can be realized. With the above multiple functions, our proposed GHPWs are a promising platform in AMs generation, switching, conversion, and polarization filtering, which will greatly expand its applications in the THz photonic integrated circuits.

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“…It would be valuable to compare our EAM with other theoretically investigated graphene-based EAMs. Many previous works focused on just graphene-based nanoplasmonic waveguides, not considering their integration into a Si photonics platform [15]- [17], [19]. Those waveguides have better EAM characteristics than the GIMSA waveguide.…”

Section: Electric Characteristics Of the Eammentioning

confidence: 99%

“…A few examples of such waveguide structures, which have been experimentally investigated, are a silicon (Si) slot waveguide [9], a photonic crystal waveguide [10], [11], a hybrid plasmonic waveguide [12]- [14], etc. In addition to them, various nanoplasmonic waveguides mainly focusing on a larger modulation depth have been theoretically studied [15]- [22].…”

Section: Introductionmentioning

confidence: 99%